Patent application number | Description | Published |
20110043121 | LIGHTING CIRCUIT AND ILLUMINATION DEVICE - A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply. | 02-24-2011 |
20130162155 | LIGHTING CIRCUIT AND ILLUMINATION DEVICE - A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply. | 06-27-2013 |
20130285548 | Lighting Control Device for Vehicle, Lighting Control System for Vehicle, and Lighting Control Method for Vehicle - A lighting control device for a vehicle according to the embodiment includes a display unit; a control device reception unit which receives non-lighted state information of a light source of a lighting system; and a control device control circuit which changes a display state of the display unit based on the non-lighted state information. | 10-31-2013 |
Patent application number | Description | Published |
20090023583 | PHOTOCATALYST MATERIAL, PHOTOCATALYST COMPOSITION USING THE SAME AND PHOTOCATALYST PRODUCT - An object of the invention is to provide a photocatalyst material having a higher catalyst effect than conventional photocatalyst materials. The photocatalyst material of the invention contains, as its major component, a tungsten oxide powder excited by a light source which emits light having a wavelength of 430 to 500 nm, the photocatalyst material having a decomposition ability of 50% or more wherein the decomposition ability is given by the following equation based on the following test: | 01-22-2009 |
20090296412 | LIGHTING SYSTEM - A spotlight is provided with a substrate having LEDs disposed thereon and a main body casing on which the substrate is provided. The main body casing has a rear side portion having thermal conductivity, which is thermally coupled to the substrate, and is capable of changing the irradiation angle of light emitted from the LEDs. A plurality of heat-radiating fins for forming grooves operating as a plurality of convection paths along the direction of changing the irradiation angle are provided on the rear side portion of the main body casing. | 12-03-2009 |
20120161194 | LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS - A light-emitting device includes a substrate having a front surface on which a semiconductor light-emitting element is mounted. A front cover is provided which thermally contacts the front surface of the substrate at a periphery of the semiconductor light-emitting element and is disposed on a front side of the substrate. A heat conduction path is formed along which heat generated by the semiconductor light-emitting element is conducted in order of the substrate and the front cover and the heat is radiated from a front surface of the front cover, so that a heat radiation property from a front surface of the light-emitting device is improved. | 06-28-2012 |
20120262928 | LAMP APPARATUS AND LUMINAIRE - According to one embodiment, a lamp apparatus includes a light-emitting module, housing, and a lighting circuit. The light-emitting module includes a light-emitting element. The housing opens in the direction of irradiation of a light beam and having a cap on a side opposite from the direction of irradiation of the light beam. The cap is provided with a light-emitting module mounting portion projecting in the direction of irradiation of the light beam and the light-emitting module is mounted on the light-emitting module mounting portion. The lighting circuit is accommodated in the housing. | 10-18-2012 |
20120313551 | Lamp Device - According to one embodiment, a lamp device includes a housing including a cap, a light-emitting module arranged in the housing and a lighting circuit. The light-emitting module includes a module board, and a semiconductor light-emitting element mounted on the module board. The lighting circuit includes a circuit board, plural circuit components mounted on the circuit board, and a first thermosensor and a second thermosensor arranged at different positions on the circuit board where a temperature difference occurs at time of lighting. The lighting circuit controls lighting of the semiconductor light-emitting element according to the temperature difference between the first thermosensor and the second thermosensor. | 12-13-2012 |
20130119866 | Luminaire and Lighting Method - According to one embodiment, a luminaire includes a light source that generates heat, a dome inside of which the light source is accommodated, and a globe covering the light source through the dome. At least part of the dome and at least part of the globe are translucent or transparent. A liquid is sealed in a space formed between the dome and the globe. | 05-16-2013 |
20130250586 | Lighting Device - A lighting device according to an embodiment includes a light source module, a thermal radiation member, and a fixing member. The light source module is a module mounted with a light-emitting element such as an LED (Light Emitting Diode) on the inside and including the light-emitting element as a light source. In the thermal radiation member, the light source module is set. The thermal radiation member radiates heat generated from the light source module. A fixing member is screwed on a sidewall of the thermal radiation member in a state in which the fixing member surrounds the light source module and the thermal radiation member. | 09-26-2013 |
20130300277 | BULB-TYPE LAMP AND LUMINAIRE - According to one embodiment, in a constricted part of a globe, one end is set to a minimum diameter, the other end is set to a maximum diameter, and a diameter thereof increases from the one end side to the other end side. The constricted part of the globe is concaved into the inside of an imaginary straight line connecting an outer edge of the one end and an outer edge of the other end when viewed in section. A light source part includes a semiconductor light-emitting element and is contained in the globe so that a light-emitting part is positioned between both the ends of the constricted part of the globe. A cap is positioned on one end side of the globe. | 11-14-2013 |
20130301280 | Bulb-Shaped Lamp and Luminaire - According to one embodiment, a bulb-shaped lamp includes a light source unit, a plurality of substrates, a substrate holding member, and a globe. The respective substrates hold light source units. The substrate holding member has thermal conductivity and an insulating property and holds the respective substrates. The globe is thermally connected to the substrate holding member. The cap is positioned on one end side of the globe. | 11-14-2013 |
Patent application number | Description | Published |
20100277083 | LIGHTING DEVICE - According to one embodiment, a lighting device includes a device board, a rectification device connected to a commercial power supply, a series LED circuit, and a transistor (current limiter) which limits a maximum current flowing through the series LED circuit. The series circuit mounted on the device board is configured by connecting in series a plurality of LED elements. Each of the LED elements lights when an output voltage of the rectification device is applied to the series circuit. A number of LED elements included in the series circuit is set in a manner that a voltage applied to the series LED circuit is 70 to 90% of the output voltage of the rectification device. | 11-04-2010 |
20100301731 | LIGHT EMITTING MODULE AND ILLUMINATION DEVICE - According to one embodiment, a light-emitting module includes a module substrate, a reflective layer, conductive layers, a light-emitting element, and a sealing member. A reflective layer is provided on a surface of an insulating layer of the module substrate, and the conductive layers are provided in the vicinity of the reflective layer. Further, the light-emitting element is provided on the reflective layer. Moreover, the translucent sealing member has translucency and bury the reflective layer, the conductive layers, and the light-emitting element. The ratio of the area occupied by the reflective layer and the conductive layers to the sealed region sealed by the sealing member is equal to or greater than 80%. | 12-02-2010 |
20110074290 | SELF-BALLASTED LAMP AND LIGHTING EQUIPMENT - A self-ballasted lamp includes: a base body; a light-emitting module and a globe which are provided at one end side of the base body; a cap provided at the other end side of the base body; and a lighting circuit housed between the base body and the cap. The light-emitting module has light-emitting portions each using a semiconductor light-emitting element, and a support portion projected at one end side of the base body, and the light-emitting portions are disposed at least on a circumferential surface of the support portion. A light-transmissive member is interposed between the light-emitting module and an inner face of the globe. | 03-31-2011 |
20110089805 | LIGHT-EMITTING APPARATUS AND LUMINAIRE - According to one embodiment, a light-emitting apparatus includes an insulating base made of ceramics, an obverse metallic component dividedly arranged on the front surface of the insulating base, semiconductor light-emitting elements mounted on the obverse metallic component, and a reverse metallic component arranged on a back surface of the insulating base and having a thickness same as or smaller than a thickness of the obverse metallic component and a volume equal to 50% or larger of a volume of the obverse metallic component. | 04-21-2011 |
20110222264 | LIGHT EMITTING DEVICE AND ILLUMINATION APPARATUS - According to one embodiment, a light emitting device which is attached to an illumination apparatus and radiates light having a correlated color temperature of 2900 to 3600K is provided. The light emitting device includes a substrate, blue light emitting LED elements and red light emitting LED elements mounted on the substrate, and a wavelength converting unit. The red light emitting LED elements have a luminous intensity of 0.2 to 2.5 times as large as that of the blue light emitting LED elements at normal use temperature in a state where the light emitting device is attached to the illumination apparatus. The wavelength converting unit is excited by light emitted from the blue light emitting LED elements and converts the light to light having a peak wavelength within a range of 500 to 600 nm. | 09-15-2011 |
20110254023 | LUMINAIRE AND LIGHT-EMITTING APPARATUS WITH LIGHT-EMITTING DEVICE - According to one embodiment, the light-emitting apparatus is provided with a substrate, a plurality of light-emitting devices, and a phosphor layer. The plurality of light-emitting devices are mounted on the substrate. The phosphor layer is formed of a translucent resin containing a phosphor and includes a phosphor portion that is formed in a convex shape and covers a predetermined number of the light-emitting device. Bases of the adjacent phosphor portions are formed by being linked with one another. | 10-20-2011 |
20110291151 | LIGHT EMITTING DEVICE AND LIGHTING APPARATUS - According to one embodiment, a light emitting device includes a ceramics substrate, a metallic thermally-conductive layer formed on the substrate in which the substrate involves no electric connection, a light emitting element mounted on the metallic thermally-conductive layer, and a metallic bonding layer interposed between the metallic thermally-conductive layer and the light emitting element to bond the light emitting element to the metallic thermally-conductive layer. | 12-01-2011 |
20110309379 | LIGHT-EMITTING DEVICE AND LUMINARE - According to one embodiment, a light-emitting device includes a substrate, a plurality of light-emitting elements and a sealing resin. The substrate is formed in a substantially rectangular shape. The plurality of light-emitting elements forms a plurality of rows by being arranged in a direction perpendicular to a longer dimension of the substrate. The rows are arranged in a longer direction of the substrate with a gap provided therebetween. The gap is set between the rows such that illumination intensity is evenly produced. The sealing resin coves each of the rows of the light-emitting elements. | 12-22-2011 |
20110309381 | LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS - According to one embodiment, a light-emitting device includes a series circuit, a substrate, and a sealing member. The series circuit includes a plurality of parallel circuits each including a plurality of light-emitting elements connected in parallel. The plurality of parallel circuits are connected in series. A plurality of groups are provided on the substrate. Each of the groups includes at least one of the light-emitting elements in the parallel circuit. The light-emitting elements are arranged in a divided manner according to each of the groups. The sealing member covers at least one of the light-emitting elements. | 12-22-2011 |
20120075836 | LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS - A light-emitting device includes a substrate, and a plurality of light-emitting elements mounted on the substrate. The light-emitting elements are placed to meet conditions that the number B of light-emitting elements per unit area (cm | 03-29-2012 |
20120305963 | LIGHT-EMITTING DEVICE AND LUMINAIRE - According to one embodiment, a light-emitting device includes a substrate, a reflecting layer formed on the substrate, a light-emitting element placed on the reflecting layer, and a sealing resin layer that covers the reflecting layer and the light-emitting element. The oxygen permeability of the sealing resin layer is equal to or lower than 1200 cm | 12-06-2012 |
20140145590 | SELF-BALLASTED LAMP AND LIGHTING EQUIPMENT - A self-ballasted lamp includes: a base body; a light-emitting module and a globe which are provided at one end side of the base body; a cap provided at the other end side of the base body; and a lighting circuit housed between the base body and the cap. The light-emitting module has light-emitting portions each using a semiconductor light-emitting element, and a support portion projected at one end side of the base body, and the light-emitting portions are disposed at least on a circumferential surface of the support portion. A light-transmissive member is interposed between the light-emitting module and an inner face of the globe. | 05-29-2014 |